Phase Change Thermal Storage Materials for Interdisciplinary Applications

Chemical Reviews, Journal Year: 2023, Volume and Issue: 123(11), P. 6953 - 7024

Published: March 22, 2023

Functional phase change materials (PCMs) capable of reversibly storing and releasing tremendous thermal energy during the isothermal process have recently received attention in interdisciplinary applications. The smart integration PCMs with functional supporting enables multiple cutting-edge applications, including optical, electrical, magnetic, acoustic, medical, mechanical, catalytic disciplines etc. Herein, we systematically discuss storage mechanism, transfer conversion summarize state-of-the-art advances applications PCMs. In particular, are still their infancy. Simultaneously, in-depth insights into correlations between microscopic structures thermophysical properties composite revealed. Finally, current challenges future prospects also highlighted according to up-to-date This review aims arouse broad research interest community provide constructive references for exploring next generation advanced multifunctional thereby facilitating major breakthroughs both fundamental researches commercial

Language: Английский

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A Roadmap Review of Thermally Conductive Polymer Composites: Critical Factors, Progress, and Prospects

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(36)

Published: June 15, 2023

Abstract Recently, the need for miniaturization and high integration have steered a strong technical wave in developing (micro‐)electronic devices. However, excessive amounts of heat may be generated during operation/charging, severely affecting device performance leading to life/property loss. Benefiting from their low density, easy processing manufacturing cost, thermally conductive polymer composites become research hotspot mitigate disadvantage heat, with potential applications 5G communication, electronic packaging energy transmission. By far, reported thermal conductivity coefficient (λ) composite is far expectation. Deeper understanding transfer mechanism desired next generation composites. This review holistically scopes current advances this field, while giving special attention critical factors that affect as well conduction mechanisms on how enhance λ value. covers such interfacial resistance, chain structure polymer, intrinsic value different fillers, orientation/configuration nanoparticles, 3D interconnected networks, technology, etc. The devices are summarized. existing problems also discussed, new challenges opportunities prospected.

Language: Английский

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The Critical Role of Fillers in Composite Polymer Electrolytes for Lithium Battery

Nano-Micro Letters, Journal Year: 2023, Volume and Issue: 15(1)

Published: March 28, 2023

With excellent energy densities and highly safe performance, solid-state lithium batteries (SSLBs) have been hailed as promising storage devices. Solid-state electrolyte is the core component of SSLBs plays an essential role in safety electrochemical performance cells. Composite polymer electrolytes (CPEs) are considered one most candidates among all due to their comprehensive performance. In this review, we briefly introduce components CPEs, such matrix species fillers, well integration fillers polymers. particular, focus on two major obstacles that affect development CPEs: low ionic conductivity high interfacial impedance. We provide insight into factors influencing conductivity, terms macroscopic microscopic aspects, including aggregated structure polymer, ion migration rate carrier concentration. addition, also discuss electrode-electrolyte interface summarize methods for improving interface. It expected review will feasible solutions modifying CPEs through further understanding conduction mechanism compatibility

Language: Английский

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Flexible, Highly Thermally Conductive and Electrically Insulating Phase Change Materials for Advanced Thermal Management of 5G Base Stations and Thermoelectric Generators

Nano-Micro Letters, Journal Year: 2023, Volume and Issue: 15(1)

Published: Jan. 9, 2023

Thermal management has become a crucial problem for high-power-density equipment and devices. Phase change materials (PCMs) have great prospects in thermal applications because of their large capacity heat storage isothermal behavior during phase transition. However, low intrinsic conductivity, ease leakage, lack flexibility severely limit applications. Solving one these problems often comes at the expense other performance PCMs. In this work, we report core-sheath structured nanocomposites (PCNs) with an aligned interconnected boron nitride nanosheet network by combining coaxial electrospinning, electrostatic spraying, hot-pressing. The advanced PCN films exhibit ultrahigh conductivity 28.3 W m-1 K-1 BNNS loading (i.e., 32 wt%), which thereby endows PCNs high enthalpy (> 101 J g-1), outstanding ductility 40%) improved fire retardancy. Therefore, our strategies successfully balance trade-off between flexibility, Further, provide powerful cooling solutions on 5G base station chips thermoelectric generators, displaying promising conversion

Language: Английский

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Flexible and Robust Functionalized Boron Nitride/Poly(p-Phenylene Benzobisoxazole) Nanocomposite Paper with High Thermal Conductivity and Outstanding Electrical Insulation

Nano-Micro Letters, Journal Year: 2023, Volume and Issue: 16(1)

Published: Nov. 30, 2023

With the rapid development of 5G information technology, thermal conductivity/dissipation problems highly integrated electronic devices and electrical equipment are becoming prominent. In this work, "high-temperature solid-phase & diazonium salt decomposition" method is carried out to prepare benzidine-functionalized boron nitride (m-BN). Subsequently, m-BN/poly(p-phenylene benzobisoxazole) nanofiber (PNF) nanocomposite paper with nacre-mimetic layered structures prepared via sol-gel film transformation approach. The obtained m-BN/PNF 50 wt% m-BN presents excellent conductivity, incredible insulation, outstanding mechanical properties stability, due construction extensive hydrogen bonds π-π interactions between PNF, stable structures. Its λ∥ λ⊥ 9.68 0.84 W m-1 K-1, volume resistivity breakdown strength as high 2.3 × 1015 Ω cm 324.2 kV mm-1, respectively. Besides, it also extremely tensile 193.6 MPa decomposition temperature 640 °C, showing a broad application prospect in high-end management fields such equipment.

Language: Английский

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Joint‐Inspired Liquid and Thermal Conductive Interface for Designing Thermal Interface Materials with High Solid Filling yet Excellent Thixotropy

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(14)

Published: Jan. 22, 2023

Abstract For advanced thermal interface materials (TIMs), massive inorganic addition for high isotropic conductivities conflicts with suitable rheological viscosity low contact resistance. Traditional strategies rarely resolve such a contradiction, and it remains an academic industrial challenge. Herein, inspired by the structure function of bone joint, best‐of‐both‐worlds approach is reported that endows standard polydimethylsiloxane/alumina (PDMS/Al 2 O 3 ) TIM simultaneously enhanced mobility conductivity. It conducted employing morphology‐controllable gallium‐based liquid metal (LM) to surface Al scalable mechanochemical process. At typical polymer‐LM‐Al interface, LM droplets cohesive energy can release freedom macromolecular chain relaxation reduce viscosity, successfully allowing high‐loading TIMs (79 vol.%) keep thixotropic state effectively reducing its resistance copper substrate 65%. same time, adjacent LMs merge thermally bridge separate particles, which facilitates interfacial conduction enhances conductivity from 5.9 6.7 W m −1 K . Along additional electrical insulation, this filler modification strategy believed inspire others develop high‐performance polymer‐based future electronics.

Language: Английский

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Functional Materials and Innovative Strategies for Wearable Thermal Management Applications

Nano-Micro Letters, Journal Year: 2023, Volume and Issue: 15(1)

Published: June 29, 2023

Thermal management is essential in our body as it affects various bodily functions, ranging from thermal discomfort to serious organ failures, an example of the worst-case scenario. There have been extensive studies about wearable materials and devices that augment thermoregulatory functionalities body, employing diverse systematic approaches attaining homeostasis. This paper reviews recent progress functional contribute wearables, particularly emphasizing strategic methodology regulate temperature. exist several methods promote personal a form. For instance, we can impede heat transfer using thermally insulating material with extremely low conductivity or directly cool skin surface. Thus, classify many into two branches, passive active modes, which are further subdivided specific strategies. Apart discussing strategies their mechanisms, also identify weaknesses each strategy scrutinize its potential direction should follow make substantial contributions future regulatory industries.

Language: Английский

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Multiple H‐Bonding Cross‐Linked Supramolecular Solid–Solid Phase Change Materials for Thermal Energy Storage and Management

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(11)

Published: Dec. 13, 2023

Solid-solid phase change materials (SSPCMs) are considered among the most promising candidates for thermal energy storage and management. However, application of SSPCMs is consistently hindered by canonical trade-off between high TES capacity mechanical robustness. In addition, they suffer from poor recyclability due to chemical cross-linking. Herein, a straightforward but effective strategy fabricating supramolecular with latent heat strength proposed. The polymer employs multiple H-bonding interactions as robust physical cross-links. This enables SSPCM enthalpy transition (142.5 J g

Language: Английский

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The performance investigation and optimization of reciprocating flow applied for liquid-cooling-based battery thermal management system

Energy Conversion and Management, Journal Year: 2023, Volume and Issue: 292, P. 117378 - 117378

Published: July 21, 2023

Language: Английский

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Scalable Sol–Gel Permeation Assembly of Phase Change Layered Film Toward Thermal Management and Light‐Thermal Driving Applications

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(36)

Published: April 19, 2024

Abstract Phase change materials (PCMs) are pivotal in thermal energy management and conversion applications owing to their exceptional storage release characteristics. However, persistent challenges such as poor conductivity leakage issues have impeded widespread adoption. While existing approaches mitigate these by constructing incorporating 3D conductive networks, they constrained discontinuous preparation methods mold size limitations. Herein, a scalable sol–gel permeation assembly strategy is proposed prepare phase layered film situ filling polyethylene glycol (PEG) aramid nanofibers (ANF)/graphene nanoplates (GNP) network. Befitting from the laminated network encapsulation effect of ANF GNP, demonstrates leak‐free stable transition behavior, even after undergoing 500 heating/cooling cycles. Moreover, resulting PEG/ANF/GNP exhibits an impressive in‐plane 23.7 W mK −1 at GNP loading 28.1 vol.%, rendering it suitable for electronic devices. The possesses photo‐thermal properties, maintaining temperatures exceeding 90 °C under light power density 200 mW cm − 2 . Capitalizing on thermally induced flexibility its temperature‐dependent stiffness, utility extended developing light‐thermal driving gripper.

Language: Английский

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